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- Alamo_bolide_impact abstract "The Alamo bolide impact occurred 367 million years ago, when one or more hypervelocity objects from space slammed into shallow marine waters at a site that is now the Devonian Guilmette Formation of the Worthington Mountains and Schell Creek Range of southeastern Nevada; the event is named for breccias of metamorphosed crushed rock deposits, found as far as the town of Alamo, Nevada (the \"Alamo Breccia\"). This catastrophic impact event resulted in what is one of the best-exposed and has become the most accurately dated impact events; it occurred within the Frasnian age of the Devonian at about 367 Ma, a moment in time that was about 3.5 Ma prior to the Frasnian/Famennian extinction events, which it is unlikely to have affected. The actual impact site has not yet been significantly documented—even its precise diameter and its internal structural features are not yet clear enough to make speculations on the mass and trajectory genuinely useful. The \"tectonic overprint\", the subsequent geologic modifications since the event, have distorted the picture; the distribution of the breccia has been compressed and skewed by west-to-east thrust faults across the area. Insufficient detail does not permit a precise reconstruction of the Devonian paleogeography, beyond the fact that it was a \"wet-target\" impact in a reef front where carbonates were being built up in marine shallows.The impact site contains megabreccia of gigantic displaced blocks, together with several attributes familiar from other impact sites: shocked quartz, elevated iridium levels, and spherical lapilli. John E. Warme, one of the geologists who first recognized the geologic anomalies as the results of a bolide, estimates that the total volume of limestone reef deposits and bedrock that was smashed, deformed, partially melted or shifted during the Alamo event at 1,000 cubic kilometers. \"Ensuing tsunamis rearranged much of the debris\" he adds.After initial resistance from the Geological Society of America, the first paper published concerning the Alamo Breccia was co-authored by John Warme, Brian Ackman, Yarmanto, and Alan Chamberlain in the 1993 Nevada Petroleum Society Field Conference Guidebook.".
- Alamo_bolide_impact thumbnail AlamoBrecciaView.jpg?width=300.
- Alamo_bolide_impact wikiPageExternalLink Alamo_Impact.html.
- Alamo_bolide_impact wikiPageExternalLink alamoref.htm.
- Alamo_bolide_impact wikiPageExternalLink 2453.pdf.
- Alamo_bolide_impact wikiPageID "3025101".
- Alamo_bolide_impact wikiPageLength "4144".
- Alamo_bolide_impact wikiPageOutDegree "31".
- Alamo_bolide_impact wikiPageRevisionID "681287572".
- Alamo_bolide_impact wikiPageWikiLink Alamo,_Nevada.
- Alamo_bolide_impact wikiPageWikiLink Breccia.
- Alamo_bolide_impact wikiPageWikiLink Carbonate.
- Alamo_bolide_impact wikiPageWikiLink Category:Devonian_impact_craters.
- Alamo_bolide_impact wikiPageWikiLink Category:Geology_of_Nevada.
- Alamo_bolide_impact wikiPageWikiLink Category:Geology_of_Utah.
- Alamo_bolide_impact wikiPageWikiLink Category:Impact_craters_of_the_United_States.
- Alamo_bolide_impact wikiPageWikiLink Category:Landforms_of_Lincoln_County,_Nevada.
- Alamo_bolide_impact wikiPageWikiLink Category:Landforms_of_Nevada.
- Alamo_bolide_impact wikiPageWikiLink Category:Landforms_of_Utah.
- Alamo_bolide_impact wikiPageWikiLink Devonian.
- Alamo_bolide_impact wikiPageWikiLink Frasnian.
- Alamo_bolide_impact wikiPageWikiLink Geological_Society_of_America.
- Alamo_bolide_impact wikiPageWikiLink Hypervelocity.
- Alamo_bolide_impact wikiPageWikiLink Impact_event.
- Alamo_bolide_impact wikiPageWikiLink Iridium.
- Alamo_bolide_impact wikiPageWikiLink Lapilli.
- Alamo_bolide_impact wikiPageWikiLink Late_Devonian_extinction.
- Alamo_bolide_impact wikiPageWikiLink Nevada.
- Alamo_bolide_impact wikiPageWikiLink Pahranagat_Valley.
- Alamo_bolide_impact wikiPageWikiLink Palaeogeography.
- Alamo_bolide_impact wikiPageWikiLink Schell_Creek_Range.
- Alamo_bolide_impact wikiPageWikiLink Shocked_quartz.
- Alamo_bolide_impact wikiPageWikiLink Space.
- Alamo_bolide_impact wikiPageWikiLink Thrust_fault.
- Alamo_bolide_impact wikiPageWikiLink Tsunami.
- Alamo_bolide_impact wikiPageWikiLink Worthington_Mountains.
- Alamo_bolide_impact wikiPageWikiLink Year.
- Alamo_bolide_impact wikiPageWikiLink File:AlamoBreccia.jpg.
- Alamo_bolide_impact wikiPageWikiLink File:AlamoBrecciaView.jpg.
- Alamo_bolide_impact wikiPageWikiLinkText "Alamo Impact Breccia".
- Alamo_bolide_impact wikiPageWikiLinkText "Alamo Impact".
- Alamo_bolide_impact wikiPageWikiLinkText "Alamo bolide impact".
- Alamo_bolide_impact wikiPageWikiLinkText "Alamo meteor impact".
- Alamo_bolide_impact wikiPageWikiLinkText "Alamo".
- Alamo_bolide_impact wikiPageUsesTemplate Template:Commons_category.
- Alamo_bolide_impact wikiPageUsesTemplate Template:Impact_cratering_on_Earth.
- Alamo_bolide_impact wikiPageUsesTemplate Template:Reflist.
- Alamo_bolide_impact subject Category:Devonian_impact_craters.
- Alamo_bolide_impact subject Category:Geology_of_Nevada.
- Alamo_bolide_impact subject Category:Geology_of_Utah.
- Alamo_bolide_impact subject Category:Impact_craters_of_the_United_States.
- Alamo_bolide_impact subject Category:Landforms_of_Lincoln_County,_Nevada.
- Alamo_bolide_impact subject Category:Landforms_of_Nevada.
- Alamo_bolide_impact subject Category:Landforms_of_Utah.
- Alamo_bolide_impact comment "The Alamo bolide impact occurred 367 million years ago, when one or more hypervelocity objects from space slammed into shallow marine waters at a site that is now the Devonian Guilmette Formation of the Worthington Mountains and Schell Creek Range of southeastern Nevada; the event is named for breccias of metamorphosed crushed rock deposits, found as far as the town of Alamo, Nevada (the \"Alamo Breccia\").".
- Alamo_bolide_impact label "Alamo bolide impact".
- Alamo_bolide_impact sameAs Q4705984.
- Alamo_bolide_impact sameAs Category:Alamo_bolide_impact.
- Alamo_bolide_impact sameAs Alamo-nedslaget.
- Alamo_bolide_impact sameAs m.08lbdw.
- Alamo_bolide_impact sameAs Q4705984.
- Alamo_bolide_impact wasDerivedFrom Alamo_bolide_impact?oldid=681287572.
- Alamo_bolide_impact depiction AlamoBrecciaView.jpg.
- Alamo_bolide_impact isPrimaryTopicOf Alamo_bolide_impact.